Method and apparatus for third heart sound detection
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United States of America Patent
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Nov 27, 2012
Grant Date -
Jan 15, 2009
app pub date -
Sep 16, 2008
filing date -
Dec 24, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cardiac rhythm management system includes a heart sound detector providing for detection of the third heart sounds (S3). An implantable sensor such as an accelerometer or a microphone senses an acoustic signal indicative heart sounds including the second heart sounds (S2) and S3. The heart sound detector detects occurrences of S2 and starts S3 detection windows each after a predetermined delay after a detected occurrence of S2. The occurrences of S3 are then detected from the acoustic signal within the S3 detection windows.
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